How long must "records of signals received" be maintained by supervising stations?

The requirement to maintain "records of signals received" for one year at supervising stations is based on regulatory standards that ensure proper monitoring and oversight of alarm systems. Keeping these records for one year provides sufficient time for review and investigation of any incidents that may arise related to the signals. This period allows for ensuring compliance with safety and operational protocols, providing a historical reference that can be used in case of disputes, investigations, or audits.

The one-year retention requirement strikes a balance between operational efficiency and the need for thorough documentation, ensuring that facilities have adequate time to review data without overwhelming them with records that may no longer be relevant as time passes. Additionally, longer retention periods could increase storage costs and management challenges, while shorter periods might hinder the ability to address incidents effectively.